Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7119219cc0a8492…

MALICIOUS

PDF

50.8 KB Created: 2020-07-25 19:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9712f6390c99074f030e56edfdbd4b55 SHA-1: 3af15dbde62d511952d0d5ba7497a6dcba194015 SHA-256: e7119219cc0a8492378bc983e2326bb3c0fe019e06750c7afac66afc24e603f7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of numerous external links suggests a link farm or redirection strategy to distribute malicious content. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=crabbing+report+oregon+2018
    • http://files.blacnflatcoatedretrievers.com/uploads/1/3/1/3/131398336/0e985.pdf
    • http://files.nicolettegraceboaz.com/uploads/1/3/0/7/130739073/kusedeko.pdf
    • http://files.cannockcatholic.org/uploads/1/3/0/7/130740124/zanuxoziku.pdf
    • http://files.nicolettegraceboaz.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/jovivowinivixupu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/72926287328.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/kijimowebugof.pdf
    • https://cdn.shopify.com/s/files/1/0429/8817/5513/files/viwage.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/42879284474.pdf
    • https://cdn.shopify.com/s/files/1/0433/6369/6805/files/17963286830.pdf
    • https://cdn.shopify.com/s/files/1/0432/3406/6600/files/gidejawuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/62739474680.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59677855830.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c3d.bin
478a93a87585294a0edaaf00acc3c05df5849b52ab18d80cccf9f07fff99e68d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3D 5248 bytes
font_01_sfnt_off00008e20.bin
262149b73240361384cb1d3b8884c4c69cec3584eeb59faed1571fe4a6e8412f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E20 14780 bytes

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